Enregistrer un fichier Excel au format texte

uses
ComObj;

function ExcelSaveAsText(ExcelFile, TextFile: TFileName): Boolean;
const
xlText = -4158;
var
ExcelApp: OleVariant;
vTemp1, vTemp2, vTemp3: OLEVariant;
begin
Result := False;
try
ExcelApp := CreateOleObject('Excel.Application');
except
// Fehler beim öffnen von Excel...
// Error occured...
Exit;
end;
try
ExcelApp.Workbooks.Open(ExcelFile);
ExcelApp.DisplayAlerts := False;
vTemp3 := False;
vTemp2 := xlText;
vTemp1 := TextFile;
ExcelApp.ActiveWorkbook.SaveAs(vTemp1, vTemp2, vTemp3);
Result := True;
finally
ExcelApp.Quit;
ExcelApp := Unassigned;
end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
ExcelSaveAsText('C:e.xls','C:YourTextFile.txt');
end;